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Finding the Fourth Proportional to 49,656.60, 74,415.78 and 38,575.80

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Solution

The fourth proportional to 49,656.60, 74,415.78 and 38,575.80 is: 57,810.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,656.60 : 74,415.78 = 38,575.80 : x
  2. Step 2: Convert to fraction form
    49,656.60/74,415.78 = 38,575.80/x
  3. Step 3: Cross multiply
    49,656.60x = 74,415.78 × 38,575.80
  4. Step 4: Simplify right side
    49,656.60x = 2,870,648,246.12
  5. Step 5: Solve for x
    x = 2,870,648,246.12/49,656.60
  6. Step 6: Final answer
    x = 57,810.00

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.